U.S. Navy Seabees, assigned to Naval Mobile Construction Battalion 11 (NMCB11), Detachment Guam, prepare for Exercise Valiant Shield 2016 at Naval Base Guam, Aug. 19, 2016. Exercise Valiant Shield is a biennial field exercise with a primary focus on interoperability and integration of joint training among U.S. forces. (U.S. Navy combat camera photo by Mass Communication Specialist 3rd Class Alfred A. Coffield/Released).